期刊
FRONTIERS IN CELLULAR NEUROSCIENCE
卷 4, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fncel.2010.00006
关键词
drosophila melanogaster; olfaction; bilateral; chemotaxis; orientation behavior; sensory perception
资金
- Spanish Ministry of Science and Innovation (MICINN) [BFU2008-00362]
- Boehringer-Ingelheim Foundation
- EMBL-CRG Systems
- National Science Foundation [IOS-0718325]
Early in evolution, the ability to sense and respond to changing environments must have provided a critical survival advantage to living organisms. From bacteria and worms to flies and vertebrates, sophisticated mechanisms have evolved to enhance odor detection and localization. Here, we review several modes of chemotaxis. We further consider the relevance of a striking and recurrent motif in the organization of invertebrate and vertebrate sensory systems, namely the existence of two symmetrical olfactory sensors. By combining our current knowledge about the olfactory circuits of larval and adult Drosophila, we examine the molecular and neural mechanisms underlying robust olfactory perception and extend these analyses to recent behavioral studies addressing the relevance and function of bilateral olfactory input for gradient detection. Finally, using a comparative theoretical approach based on Braitenberg's vehicles, we speculate about the relationships between anatomy, circuit architecture and stereotypical orientation behaviors.
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